[INFO] fetching crate py-laddu 0.11.0...
[INFO] checking py-laddu-0.11.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate py-laddu 0.11.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate py-laddu 0.11.0
[INFO] finished tweaking crates.io crate py-laddu 0.11.0
[INFO] tweaked toml for crates.io crate py-laddu 0.11.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate py-laddu 0.11.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate py-laddu 0.11.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e3e7c2d4c70d1f59702047d8244059da64b803cf7ef255054bf0500d3bf76dd
[INFO] running `Command { std: "docker" "start" "-a" "2e3e7c2d4c70d1f59702047d8244059da64b803cf7ef255054bf0500d3bf76dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e3e7c2d4c70d1f59702047d8244059da64b803cf7ef255054bf0500d3bf76dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e3e7c2d4c70d1f59702047d8244059da64b803cf7ef255054bf0500d3bf76dd", kill_on_drop: false }`
[INFO] [stdout] 2e3e7c2d4c70d1f59702047d8244059da64b803cf7ef255054bf0500d3bf76dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54778e30db8ac65af27e43043eaf35a7c18d678cc0f78874dc7998d15f41a8ce
[INFO] running `Command { std: "docker" "start" "-a" "54778e30db8ac65af27e43043eaf35a7c18d678cc0f78874dc7998d15f41a8ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling target-lexicon v0.13.3
[INFO] [stderr]     Checking arrow-schema v56.2.0
[INFO] [stderr]     Checking lexical-util v1.0.7
[INFO] [stderr]     Checking bitflags v2.9.4
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]     Checking getrandom v0.3.3
[INFO] [stderr]     Checking bytemuck v1.24.0
[INFO] [stderr]     Checking chrono v0.4.42
[INFO] [stderr]    Compiling flatbuffers v25.9.23
[INFO] [stderr]     Checking atoi v2.0.0
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]    Compiling cc v1.2.41
[INFO] [stderr]     Checking regex-syntax v0.8.6
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling erased-serde v0.4.8
[INFO] [stderr]    Compiling zstd-safe v7.2.4
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]     Checking safe_arch v0.7.4
[INFO] [stderr]     Checking lexical-write-integer v1.0.6
[INFO] [stderr]     Checking lexical-parse-integer v1.0.6
[INFO] [stderr]     Checking hamming v0.1.3
[INFO] [stderr]     Checking simdutf8 v0.1.5
[INFO] [stderr]    Compiling typetag v0.2.21
[INFO] [stderr]     Checking dirs-sys v0.5.0
[INFO] [stderr]     Checking primal-bit v0.3.2
[INFO] [stderr]     Checking papergrid v0.17.0
[INFO] [stderr]     Checking transpose v0.2.3
[INFO] [stderr]     Checking lexical-parse-float v1.0.6
[INFO] [stderr]     Checking lexical-write-float v1.0.6
[INFO] [stderr]     Checking wide v0.7.33
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking primal-check v0.3.4
[INFO] [stderr]    Compiling pyo3-build-config v0.26.0
[INFO] [stderr]     Checking ordered-float v2.10.1
[INFO] [stderr]     Checking integer-encoding v3.0.4
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking inventory v0.3.21
[INFO] [stderr]     Checking iter-read v1.1.0
[INFO] [stderr]     Checking primal-estimate v0.3.3
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]     Checking twox-hash v2.1.2
[INFO] [stderr]     Checking lnexp v0.2.1
[INFO] [stderr]     Checking fastrand-contrib v0.1.0
[INFO] [stderr]     Checking logsumexp v0.1.0
[INFO] [stderr]     Checking lz4_flex v0.11.5
[INFO] [stderr]     Checking lexical-core v1.0.6
[INFO] [stderr]     Checking primal-sieve v0.3.7
[INFO] [stderr]     Checking rayon v1.11.0
[INFO] [stderr]     Checking thrift v0.17.0
[INFO] [stderr]     Checking flate2 v1.1.4
[INFO] [stderr]     Checking brotli v8.0.2
[INFO] [stderr]     Checking ctrlc v3.5.0
[INFO] [stderr]     Checking dirs v6.0.0
[INFO] [stderr]     Checking rustc-hash v2.1.1
[INFO] [stderr]     Checking ieee754 v0.2.6
[INFO] [stderr]     Checking tabled v0.20.0
[INFO] [stderr]    Compiling seq-macro v0.3.6
[INFO] [stderr]     Checking spec_math v0.1.6
[INFO] [stderr]     Checking shellexpand v3.1.1
[INFO] [stderr]     Checking factorial v0.4.0
[INFO] [stderr]     Checking auto_ops v0.3.0
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking rapidhash v4.1.0
[INFO] [stderr]     Checking regex-automata v0.4.11
[INFO] [stderr]    Compiling zstd-sys v2.0.16+zstd.1.5.7
[INFO] [stderr]    Compiling pyo3-macros-backend v0.26.0
[INFO] [stderr]    Compiling pyo3-ffi v0.26.0
[INFO] [stderr]    Compiling pyo3 v0.26.0
[INFO] [stderr]    Compiling numpy v0.26.0
[INFO] [stderr]    Compiling embed-doc-image v0.1.4
[INFO] [stderr]    Compiling darling_core v0.21.3
[INFO] [stderr]     Checking accurate v0.4.1
[INFO] [stderr]     Checking regex v1.11.3
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling zerocopy-derive v0.8.27
[INFO] [stderr]    Compiling nalgebra-macros v0.3.0
[INFO] [stderr]    Compiling typetag-impl v0.2.21
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]     Checking zerocopy v0.8.27
[INFO] [stderr]     Checking thiserror v2.0.17
[INFO] [stderr]    Compiling darling_macro v0.21.3
[INFO] [stderr]     Checking half v2.7.0
[INFO] [stderr]     Checking ahash v0.8.12
[INFO] [stderr]    Compiling darling v0.21.3
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking zstd v0.13.3
[INFO] [stderr]    Compiling serde_with_macros v3.15.0
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking csv v1.3.1
[INFO] [stderr]     Checking lock_api v0.4.14
[INFO] [stderr]     Checking serde-pickle v1.2.0
[INFO] [stderr]     Checking bincode v2.0.1
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking simba v0.9.1
[INFO] [stderr]     Checking ndarray v0.16.1
[INFO] [stderr]     Checking rustfft v6.4.1
[INFO] [stderr]    Compiling pyo3-macros v0.26.0
[INFO] [stderr]     Checking arrow-buffer v56.2.0
[INFO] [stderr]     Checking serde_with v3.15.0
[INFO] [stderr]     Checking arrow-data v56.2.0
[INFO] [stderr]     Checking arrow-array v56.2.0
[INFO] [stderr]     Checking arrow-select v56.2.0
[INFO] [stderr]     Checking arrow-row v56.2.0
[INFO] [stderr]     Checking arrow-arith v56.2.0
[INFO] [stderr]     Checking arrow-cast v56.2.0
[INFO] [stderr]     Checking arrow-ipc v56.2.0
[INFO] [stderr]     Checking arrow-string v56.2.0
[INFO] [stderr]     Checking arrow-ord v56.2.0
[INFO] [stderr]     Checking arrow-json v56.2.0
[INFO] [stderr]     Checking arrow-csv v56.2.0
[INFO] [stderr]     Checking nalgebra v0.34.1
[INFO] [stderr]     Checking parquet v56.2.0
[INFO] [stderr]     Checking arrow v56.2.0
[INFO] [stderr]     Checking ganesh v0.25.1
[INFO] [stderr]     Checking laddu-core v0.11.0
[INFO] [stderr]     Checking laddu-python v0.11.0
[INFO] [stderr]     Checking laddu-extensions v0.11.0
[INFO] [stderr]     Checking laddu-amplitudes v0.11.0
[INFO] [stderr]     Checking py-laddu v0.11.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> src/lib.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn version() -> String {
[INFO] [stdout]   |                     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> src/lib.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn version() -> String {
[INFO] [stdout]   |                     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `py-laddu` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `py-laddu` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "54778e30db8ac65af27e43043eaf35a7c18d678cc0f78874dc7998d15f41a8ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54778e30db8ac65af27e43043eaf35a7c18d678cc0f78874dc7998d15f41a8ce", kill_on_drop: false }`
[INFO] [stdout] 54778e30db8ac65af27e43043eaf35a7c18d678cc0f78874dc7998d15f41a8ce
